99618903 has 40 divisors (see below), whose sum is σ = 155576960. Its totient is φ = 63452160.

The previous prime is 99618899. The next prime is 99618913. The reversal of 99618903 is 30981699.

It is not a de Polignac number, because 99618903 - 2² = 99618899 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99618913) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 243363 + ... + 243771.

It is an arithmetic number, because the mean of its divisors is an integer number (3889424).

Almost surely, 2^99618903 is an apocalyptic number.

99618903 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

99618903 is a deficient number, since it is larger than the sum of its proper divisors (55958057).

99618903 is a wasteful number, since it uses less digits than its factorization.

99618903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 99618903 is about 9980.9269609591. The cubic root of 99618903 is about 463.5685008884.

The spelling of 99618903 in words is "ninety-nine million, six hundred eighteen thousand, nine hundred three".